Cooler.



M. A. SIMMONS.

COOLER.

APPLIoATIoN FILED 11:11.24, 1910.

978,339. Patented Dec. 13,1910.

WIT/V555 [NI/ENTOR j? I MBZ:

.v MARCUS a. si'MMoNs, or YEAGER, oxL/ipiaa.,

COOLER.

speciaation of Letters Patent. Pi-,eted Dec, 13, 1910,

vApplication' alea rebruary a4, 1910. serial No. :Arterialy f To allwhom 'it may concern: n

Be it known that I, MARCUS A. SIMMONS `a resident of Yeager, in thecounty o Hughes and `State ofOklahoma, have invented certain new anduseful Improvements in Coolers; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art t`o which it pertains to make and usethe same. This invention relates to coolers for producing andmaintaining low temperature in any desired inclosure, such as a foodbox, storage room, or the like.

- The main object of the invention is to providesuch a cooler of highefliciency, and simple and economical both in construction andoperation.

Theinventihon consists iirthe construction hereinafter described, andparticularlypoint- -ed out in the claim.

:prises a body composed of walls of several thicknesses, as shown at 3,4 and 5, (although there may be more than three thicknesses). In the secial form illustrated walls 3 and 4 constltute the sides, ends andbottoms of wooden boxes, one within the other and separated to form anair space 6 which may contain either air only, or a suitable loosematerial such as mineral wool adapted to hold a large quantity of air.Or space 6 may be filledwith other suitable insulator or poor conductorof heat. It is not essential that these walls be of wood, and it isproposed in some cases to make the outer thickness 3 of cement and ofconsiderable thickness. The inner thickness 5 of the walls is formed bya comparatively thin sheet metal box, the interior of which is dividedinto three air and water tight compartments 8, 9 and 10 by two sheetmetal partitions 11 and 12. Between the inner wall 5 and the nextoutside of it is an air space 7 of the same character as space 6.

The tops of these airspaces betweenl the boxes are tightly closed:byfstrips 13.

As shown, box 5 is provided with three hinged covers 14, one for eachcompartment, and each adapted lto close its compartment air tight andalso to be' opened and 'closed separately. Saidfvcoversl are preferablymade of severallayers of Wood separated by layers of heavy paper 14.`The edges of the covers are of stepped formand closely fit correspondingstepped bearings inthe top of the cooler,'the lgoints bein packed. `Thecovers may be secured closed-Ey friction only or by any usual fastenerdevice.

Secured in compartment Sis a rotary air pump or blower 15, the shaft ofwhich extends to the outside where it has a driving pulley or device'loperable fbyi hand or by any suitable power. From ythe blower a pipe orpassage 17 communicates with the inclosure 1 yto be cooled, and fromlsaid inclosure a pipe 18 extends through the lower part of compartmentsy8 and 9 into com artment 10, where it is carriedup towar but not quiteto the top, but far` enough to prevent Water and ice from gettin yintoit. In use compartment 10 is filled with blocks of ice in considerablequantities, and at the bottom thereof is .a water draw-oil' pipe 19normally closed.

In the central compartment 9 is supported a coiled iron or othersuitable pipe 20 having more or less turns according to the size and.water, and packed at 22. In use compartment 9 contains ice and salt orothersuitable freezing mixture.

23 is a water draw-oil" pipe.

Operation: Compartment 10 having been char ed with ice, and 9 with iceand salt in suita le proportions, as common in cooling mixtures, blower15 is driven causing air to circulate as indicated by arrows in Fig. 1.that is from the blower to the inclosure to be cooled, and by pipe 18through compartments 8, 9 to compartment 10 where it is discharged fromthe pipe and passes through or over and indirect contact with the ice,being made as dry com and pure as ice can make it before passing intoand through coil 20 submerged in the ,freezing'mixture `From the coilthe extremely cold air is dis,

' of the time as required to maintain the de- When first begin-- siredlow temperature. ning the air takenl from inclosure 1 will be warm,especially `if warm meats or vegetables, for example, have been recentlyplaced therein, and in such case it is desirable to discharge air frompipe 18 into the open air for a short time, not sending it through thecooler, and this can be done .by leaving the pipe disconnected from thecooler at 18() and later closing such connection. But ordinarily this 1snotnecessary since the air if sent directly to the cooler is deprived ofthe greater part of its :warmth in passing through the cooler before it'reaches the ice chamber. Owing tothis preliminary cooling-of the airthe ice will melt but slowly inf the ice chamber, and the air passingthroughcoil 20 being as cold as ice alone will make it will not rapidlyexhaust the freezing mixture, and ice and salt need only be added atlong intervals.

In practice the metal partition 11 of chamber 8 is heavily coated withfrost, and this forms a convenient yindication that the device isWorking properly. When this coat of frost begins to disappear it showsthat saltor ice or both are needed.

Evidently if desired space in the first I chamber not occupied by theblower may be used as a refrigerator for any articles at' the same timethatinclosure 1 is being cooled, or independently thereof. Also thatwater bottles or -the like-can be frozen in chamber 9, though these.uses are merely incidental..

It is sometimes found desirable to close the pipe 18 where it issuesfrom the cooler,

the outside pipe being disconnected, and any suitable stopper or deviceis provided for the purpose.

Having thus described the invention what I claim is A cooler comprisingthree compartments,

a blower in one of said compartments an outlet from the blower tothe'exterlor of the cooler, an ice compartment in the cooler, a4

freezing-miXture-compartment in the cooler, an air-intake-pipe extendingthrough the blower-compartment and the freezing-mixture-compartment andcommunicating with MARCUS A. SIMMONS.

Witnesses:

C. M. CATLIN, RoB'r. T. LANG.

